Bohr, Lewis Dot & Valence Electrons

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does Boron have?

Back

Boron has 3 valence electrons.

Front

What is the significance of the group number in the periodic table?

Back

The group number indicates the number of valence electrons in the elements of that group.

Front

Which elements are in group 2 of the periodic table?

Back

Group 2 elements include Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).

Front

Why do elements in the same group react similarly?

Back

Elements in the same group have the same number of valence electrons, which leads to similar chemical properties.

Front

What happens to the number of electron shells as you move down a group in the periodic table?

Back

The number of electron shells increases as you move down a group.

Front

How many valence electrons does Iodine have?

Back

Iodine has 7 valence electrons.

Front

What is a Lewis dot diagram?

Back

A Lewis dot diagram is a representation of an atom that shows its valence electrons as dots around the element's symbol.

Front

What is the correct Lewis dot diagram for Carbon?

Back

The Lewis dot diagram for Carbon shows 4 dots around the symbol 'C', representing its 4 valence electrons.

Front

What is the relationship between electron shells and atomic size?

Back

As the number of electron shells increases, the atomic size generally increases.